Lockable telescopic buckle structure

Abstract

The utility model discloses a lockable retractable buckle structure, including the buckle body, winding wheel, clockwork spring, drawstring and locking piece, be provided with the installation space in the buckle body, winding wheel rotatablely install in the installation space, the inner ring end of clockwork spring is connected with the buckle body, the outer ring end of clockwork spring is connected with winding wheel, and drawstring is set through winding wheel, locking piece movably install on the buckle body, and locking piece is movable to locking position and unlocking position, through setting movable locking piece, can lock winding wheel in locking position, prevent the release or winding of drawstring, in the release position, then allow winding wheel to rotate to release or winding drawstring, through locking piece can fix drawstring after pulling out, set up like this, no redundant composite structure or redundant part, need not high accuracy matching multiple sets of components, greatly simplify the overall structure and assembly process, both simplify operation and can flexible regulation drawstring length, realize simple structure, convenient operation's effect.

Description

Technical Field

[0001] This utility model relates to the field of telescopic buckle technology, and in particular to a lockable telescopic buckle structure. Background Technology

[0002] Telescopic buckles, as connecting components with adjustable length, are widely used in various fields such as daily life, outdoor sports, industrial production, and electronic devices. In daily life, telescopic buckles are often used for items such as keychains, backpack straps, and ID card holders, making it convenient for users to carry and access these items. In the field of outdoor sports, they can be used as connecting components for mountaineering equipment and camping gear, ensuring the stability and length adjustability of the equipment during use.

[0003] However, the telescopic buckle structure in the existing technology is relatively complex. From the overall design perspective, in order to achieve the length adjustment and locking functions, it is often necessary to equip multiple sets of independent parts and composite structures. Not only are there many parts, but high-precision assembly must also be ensured, otherwise jamming, misalignment and other failures are likely to occur. This not only increases the overall size of the product, making it difficult to adapt to the needs of miniaturization and carrying, but also increases the assembly difficulty and manufacturing cost. Subsequent maintenance requires the replacement of the entire component, and damaged parts cannot be replaced individually. The practicality and economy are insufficient, and it cannot meet the needs of users. Utility Model Content

[0004] The purpose of this utility model is to provide a lockable telescopic buckle structure, which aims to at least solve the technical problems of complex telescopic buckle structures and high assembly difficulty in the prior art.

[0005] To achieve the above objectives, the present invention provides a lockable telescopic buckle structure, including a buckle body, wherein an installation space is provided in the buckle body;

[0006] The fastener has an installation space provided therein;

[0007] A winding reel, which is rotatably mounted in the mounting space;

[0008] A clockwork spring, wherein the inner end of the clockwork spring is connected to the buckle body, and the outer end of the clockwork spring is connected to the winding wheel;

[0009] A pull cord is provided, which is wound around the winding wheel. One end of the pull cord is connected to the spring or the winding wheel, and the other end of the pull cord extends out of the installation space. A pull ring is provided at the other end of the pull cord.

[0010] A locking element is movably mounted on the buckle body. The locking element is movable to a locked position and an unlocked position. In the locked position, the locking element can lock the winding wheel so that the winding wheel cannot rotate within the installation space to prevent the winding wheel from releasing or winding the pull rope. In the unlocked position, the winding wheel can rotate within the installation space to release or wind the pull rope.

[0011] Furthermore, the side surface of the winding wheel is provided with a take-up groove so that the pull rope can be wound in the take-up groove.

[0012] Furthermore, the winding wheel extends protruding towards one side of the locking member to form a plurality of circumferentially arranged snap-fit ​​protrusions, thereby forming snap-fit ​​grooves between the plurality of snap-fit ​​protrusions. The locking member is provided with a clearance groove, and the plurality of snap-fit ​​protrusions are inserted into the clearance groove. The groove wall of the clearance groove extends radially inward to form a locking protrusion, so that the locking protrusion can be engaged in the snap-fit ​​groove in the locked position.

[0013] Furthermore, the fastener includes:

[0014] The fastener body has one side recessed and extends downward to form a groove;

[0015] A cover assembly, which is mounted on the buckle body to form an installation space between the cover assembly and the buckle body and to rotatably mount the locking member on the buckle body.

[0016] Furthermore, a protruding pivot is provided on the other side of the buckle body, and a pivot hole is provided on the locking member, so that the locking member can be rotatably installed on the buckle body by aligning the pivot hole and inserting the protruding pivot.

[0017] Furthermore, the other side of the buckle body is recessed and extends downward to form an elongated groove. A first spring is provided in the elongated groove. The extension and contraction direction of the first spring is consistent with the rotation direction of the locking member. One end of the first spring is connected to the side wall of the elongated groove.

[0018] The locking member has a limiting post on the side facing the buckle body. The limiting post is connected to the other end of the first spring so that when the locking member is in the unlocked position, the first spring is compressed and accumulates elastic potential energy.

[0019] Furthermore, the other side of the buckle body extends downward to form a recessed groove, in which a second spring is provided. The extension and retraction direction of the second spring is arranged along a plane perpendicular to the buckle body. One end of the second spring is connected to the bottom wall of one end of the recessed groove, and the other end of the second spring is provided with a positioning bead.

[0020] The locking component is provided with a positioning hole corresponding to the positioning bead, so that when the locking component is in the unlocked position, the positioning bead is at least partially engaged with the positioning hole to limit the locking component.

[0021] Furthermore, the buckle body has a through-type central position, and the cover assembly includes:

[0022] A first cover is disposed on one side of the buckle body to form an installation space between the first cover and the buckle body;

[0023] A second cover is disposed on the other side of the buckle body to form a rotation space between the second cover and the buckle body, and the locking member is rotatably installed in the rotation space.

[0024] Furthermore, one of the first cover and the second cover is provided with a mounting post structure facing the other, and the other of the first cover and the second cover is provided with a mounting hole structure corresponding to the mounting post structure. The cover assembly also includes screws to connect the first cover and the second cover by passing the screws through the mounting hole structure into the mounting post structure.

[0025] Furthermore, the mounting column structure is provided with a fixing groove structure, and the inner coil end of the spring is inserted into the fixing groove structure so that the inner coil end of the spring is fixed relative to the buckle body.

[0026] As can be seen from the above technical solution, the lockable telescopic buckle structure of this utility model, by setting a movable locking component, can lock the winding wheel in the locked position to prevent the release or winding of the pull rope. In the released position, the winding wheel is allowed to rotate to release or wind up the pull rope. The locking component can fix the pull rope after it is pulled out. This solution only uses five core components—buckle body, winding wheel, spring, pull rope, and locking component—to build a complete function. There are no superfluous composite structures or redundant parts. It does not require high-precision matching of multiple sets of components, which greatly simplifies the overall structure and assembly process. It simplifies operation and allows for flexible adjustment of the pull rope length, achieving the effect of simple structure and convenient operation.

[0027] To make the technical concept, other objectives, advantages, features and functions of this utility model clearer and easier to understand, preferred embodiments will be specifically described in the following detailed description, and will be illustrated in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the lockable telescopic buckle structure provided in the embodiments of this application;

[0030] Figure 2 This is an exploded view from another perspective of the lockable telescopic buckle structure provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the locking member in the locked position according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the locking element in the unlocked position according to an embodiment of this application;

[0033] Figure 5 This is a perspective view of the lockable telescopic buckle structure provided in the embodiments of this application;

[0034] Figure 6 This is a perspective view of the winding reel provided in an embodiment of this application;

[0035] Figure 7 This is a perspective view of the second cover provided in the embodiments of this application.

[0036] The above figures include the following reference numerals:

[0037] 100. Buckle body; 120. Buckle body; 121. Groove; 122. Protruding pivot; 123. Long waist groove; 124. First spring; 125. Recessed groove; 126. Second spring; 127. Positioning bead; 130. Cover assembly; 131. First cover; 132. Second cover; 134. Mounting post structure; 134a. Fixing groove structure; 135. Mounting hole structure; 136. Screw;

[0038] 200. Winding reel; 210. Take-up groove; 220. Snap-fit ​​protrusion; 230. Snap-fit ​​groove;

[0039] 300, mainspring; 310, inner ring end; 320, outer ring end;

[0040] 400. Pull rope; 410. Pull ring;

[0041] 500, Locking element; 510, Clearance groove; 520, Locking protrusion; 530, Rotary shaft hole; 540, Limiting post; 550, Positioning hole. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Please refer to the following: Figures 1 to 7 This embodiment provides a lockable telescopic buckle structure, including a buckle body, a winding wheel, a spring, a pull cord, and a locking element. The buckle body has an installation space, and the winding wheel is rotatably installed in the installation space. The inner end of the spring is connected to the buckle body, and the outer end of the spring is connected to the winding wheel. The pull cord is wound around the winding wheel, with one end connected to the spring or the winding wheel, and the other end extending out of the installation space. The other end of the pull cord has a pull ring. The locking element is movably installed on the buckle body and can be moved to a locked position and an unlocked position. In the locked position, the locking element can lock the winding wheel so that it cannot rotate within the installation space to prevent the winding wheel from releasing or winding the pull cord. In the unlocked position, the winding wheel can rotate within the installation space to release or wind the pull cord.

[0044] As can be seen, the lockable telescopic buckle structure of this embodiment, by setting a movable locking component, can lock the winding wheel in the locked position to prevent the release or winding of the pull rope. In the released position, the winding wheel is allowed to rotate to release or wind up the pull rope. The locking component can fix the pull rope after it is pulled out. This solution only uses five core components—buckle body, winding wheel, spring, pull rope, and locking component—to build a complete function. There are no unnecessary composite structures or redundant parts. It does not require high-precision matching of multiple sets of components, which greatly simplifies the overall structure and assembly process. It simplifies operation and allows for flexible adjustment of the pull rope length, achieving the effect of simple structure and convenient operation.

[0045] The buckle body also includes a first magnetic component and a second magnetic component on the pull ring. The first and second magnetic components can be magnetically connected to prevent the pull rope from accidentally coming off when the pull ring is hanging items such as keys.

[0046] The buckle body also includes a lobster buckle structure for hanging to a belt, leather belt, etc. The lobster buckle structure is the existing lobster buckle structure. Since it is not the key protection point of this solution, it will not be described in detail here.

[0047] In this embodiment, please refer to Figure 6The winding reel has a winding groove on its side surface, allowing the pull rope to be wound around it. This winding groove is annular, providing a dedicated and orderly winding space for the pull rope. This prevents the pull rope from misaligning, stacking, or slipping during winding or unwinding, ensuring that the pull rope is always wound and unwound in an orderly manner along a fixed trajectory. This improves the tightness and stability of the pull rope winding, reduces jamming or wear caused by the pull rope being messy, and makes the pull rope more orderly after winding.

[0048] In this embodiment, please refer to the following: Figures 1 to 6 The winding wheel protrudes and extends towards the locking member to form multiple circumferentially arranged snap-fit ​​protrusions, forming snap-fit ​​grooves between the multiple snap-fit ​​protrusions. The locking member is provided with a clearance groove, and the multiple snap-fit ​​protrusions are inserted into the clearance groove. The groove wall of the clearance groove protrudes radially inward to form a locking protrusion, so that the locking protrusion can be engaged in the snap-fit ​​groove in the locked position.

[0049] By setting multiple circumferentially distributed snap-fit ​​protrusions and snap-fit ​​grooves on the side of the winding wheel facing the locking component, and setting locking protrusions on the groove wall of the locking component's clearance groove, a precise and stable mechanical locking engagement structure is constructed. When the locking component moves to the locking position, the locking protrusions can accurately snap into the snap-fit ​​groove of the winding wheel, directly restricting the rotation of the winding wheel through physical engagement, which greatly improves the reliability and stability of locking, effectively avoiding the problem of the winding wheel loosening and the pull rope deviating due to accidental force when the pull rope is locked. While ensuring the locking function, the overall structure is simplified, the difficulty of parts processing and assembly is reduced, and the risk of jamming and failure caused by the failure of complex locking mechanism is reduced, further optimizing the practicality and durability of the telescopic buckle.

[0050] In this embodiment, please refer to the following: Figures 1 to 6 The buckle body includes a buckle body and a cover assembly. One side of the buckle body is recessed and extends downward to form a groove. The cover assembly is mounted on the buckle body to form an installation space between the cover assembly and the buckle body and to rotatably mount the locking element on the buckle body.

[0051] The groove design of the buckle body allows for preliminary positioning of components such as the winding wheel and the spring. Combined with the closing of the cover assembly, a precise closed installation space can be formed between the two. This not only prevents the core components from being exposed to the outside and being corroded by external dust and moisture, thus affecting their service life, but also restricts the displacement of the components during operation, ensuring the stability of the winding wheel rotation and the spring extension and contraction. The cover assembly can also rotatably install the locking component on the buckle body, so that the installation of the locking component is independent of and coordinated with the installation of the winding wheel and the spring. This facilitates the precise assembly of different components during production and reduces the overall assembly difficulty.

[0052] Preferably, please refer to the following: Figures 1 to 4 The buckle body has a protruding pivot on the other side, and the locking component has a pivot hole. By aligning the pivot hole and inserting the protruding pivot, the locking component can be rotatably installed onto the buckle body. By providing a protruding pivot on the other side of the buckle body and a corresponding pivot hole on the locking component, the installation of the locking component can be completed simply by aligning the pivot hole and inserting the protruding pivot during assembly, which greatly simplifies the assembly process.

[0053] Preferably, please refer to the following: Figures 1 to 4 The other side of the buckle body is recessed and extends downward to form a recessed groove. A second spring is provided in the recessed groove. The extension and contraction direction of the second spring is set along the plane perpendicular to the buckle body. One end of the second spring is connected to the bottom wall of one end of the recessed groove. A positioning bead is provided at the other end of the second spring. A positioning hole corresponding to the positioning bead is provided on the locking member. When the locking member is in the unlocked position, the positioning bead is at least partially engaged with the positioning hole to limit the locking member.

[0054] The design incorporates a recessed groove on the other side of the buckle body, housing a second spring with a positioning bead at the spring's end. A corresponding positioning hole is also provided on the locking component. When the locking component rotates to the unlocked position, the elastic force of the second spring pushes the positioning bead at least partially into the positioning hole. This physical engagement effectively limits and fixes the locking component, preventing accidental rotation due to minor external vibrations, collisions, or tension on the pull cord in the unlocked state. This ensures the winding wheel remains stably in a free-rotating state, guaranteeing smooth cord retraction and extension. It solves the problem of unstable unlocking states that may result from relying solely on spring return force. The engagement of the positioning bead and the positioning hole provides clear tactile feedback, allowing users to clearly perceive that the locking component has switched to the unlocked position, improving operational accuracy and user experience.

[0055] Preferably, please refer to the following: Figures 1 to 4 The other side of the buckle body is recessed and extends downward to form a long waist groove. A first spring is provided in the long waist groove. The extension and contraction direction of the first spring is consistent with the rotation direction of the locking member. One end of the first spring is connected to the side wall of the long waist groove. A limit post is provided on the side of the locking member facing the buckle body. The limit post is connected to the other end of the first spring so that when the locking member is in the unlocked position, the first spring is compressed and accumulates elastic potential energy.

[0056] The design incorporates a long groove recessed on the other side of the buckle body, housing a first spring and connecting it to the limiting post of the locking component. This provides stable elastic support for the locking component's reset and state maintenance. When the locking component rotates from the locked position to the unlocked position, the limiting post rotates with the locking component and compresses the first spring, allowing it to accumulate elastic potential energy. This elastic potential energy automatically drives the limiting post to reset the locking component to the locked position when the user releases it. The long groove guides and limits the movement trajectory of the first spring and the limiting post, preventing misalignment or twisting of the spring during compression or extension, extending its service life, and making the overall structure more compact. This eliminates the need for an additional complex reset mechanism, further simplifying the structural design and reducing production and maintenance costs.

[0057] Preferably, please refer to the following: Figures 1 to 4 The buckle body is arranged through the middle position. The cover assembly includes a first cover and a second cover. The first cover is placed on one side of the buckle body to form an installation space between the first cover and the buckle body. The second cover is placed on the other side of the buckle body to form a rotation space between the second cover and the buckle body. The locking member is rotatably installed in the rotation space.

[0058] The design incorporates a through-type structure in the middle of the buckle body and separates the cover assembly into a first cover and a second cover. The first cover fits onto one side of the buckle body to form an installation space for accommodating core functional components such as the winding reel and the spring. The second cover fits onto the other side of the buckle body to form a rotation space for separately installing the locking mechanism. This design ensures clear and non-interfering installation positions for different components. It avoids structural interference between the core components and the locking mechanism during operation, ensuring smooth switching between the winding reel's rotation for rope winding and the locking mechanism's flexible operation. Furthermore, it allows for step-by-step assembly of the two types of components during assembly, reducing overall assembly difficulty.

[0059] Preferably, please refer to the following: Figures 1 to 7 One of the first cover and the second cover is provided with a mounting post structure facing the other. The other of the first cover and the second cover is provided with a mounting hole structure corresponding to the mounting post structure. The cover assembly also includes screws, so as to connect the first cover and the second cover by inserting the screws through the mounting hole structure into the mounting post structure. By providing corresponding mounting post structures and mounting hole structures between the first cover and the second cover, and using screws to achieve connection and fixation, a stable and easy-to-disassemble cover assembly connection method is constructed.

[0060] Preferably, please refer to the following: Figures 1 to 7 The mounting column structure is equipped with a fixing groove structure, and the inner end of the spring is inserted into the fixing groove structure so that the inner end of the spring is fixed relative to the buckle body.

[0061] The design achieves the connection of the inner coil end of the spring by inserting screws through the mounting hole structure into the mounting post structure to connect the first and second covers. This solves the problem of fixation failure that easily occurs when fixing the spring with additional clips, adhesives, or welding. The design cleverly utilizes the existing mounting post structure in the cover assembly, eliminating the need to add an independent fixing component for the spring. This achieves the integration of structural functions, simplifies the overall number of parts, reduces processing and assembly costs, and reduces the space occupied by the parts, making the internal structure of the buckle more compact.

[0062] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0063] This utility model's lockable telescopic buckle structure, through the setting of a movable locking component, can lock the winding wheel in the locked position, preventing the release or winding of the pull rope. In the released position, the winding wheel is allowed to rotate to release or wind up the pull rope. The locking component can fix the pull rope after it is pulled out. This solution only uses five core components—buckle body, winding wheel, spring, pull rope, and locking component—to build a complete function. There are no unnecessary composite structures or redundant parts, and no need for high-precision matching of multiple sets of components. This greatly simplifies the overall structure and assembly process, simplifies operation, and allows for flexible adjustment of the pull rope length, achieving the effect of simple structure and convenient operation.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0065] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "set, connect, link, install" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, abutting connections, or integral connections. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In this specification, the terms "longitudinal," "lateral," "top," "bottom," "inner," "outer," "central," "axial," "radial," and "circumferential," etc., are intended only to facilitate the description of this application and simplify the description based on the directional or positional relationships shown in the accompanying drawings, and are not intended to indicate or imply that the device or element involved must have a specific orientation. The device is constructed and operates in a specific orientation and therefore should not be construed as a limitation of this application.

[0067] Furthermore, it should be noted that in the description of this utility model, the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0068] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A lockable telescopic buckle structure, characterized in that, include: The fastener (100) has an installation space provided therein; A winding reel (200) is rotatably mounted in the mounting space; A spring (300) is provided, wherein the inner end (310) of the spring (300) is connected to the buckle body (100), and the outer end (320) of the spring (300) is connected to the winding wheel (200). A pull cord (400) is provided, which is wound around the winding wheel (200). One end of the pull cord (400) is connected to the spring (300) or the winding wheel (200), and the other end of the pull cord (400) extends out of the installation space. A pull ring (410) is provided at the other end of the pull cord (400). A locking element (500) is movably mounted on the buckle body (100). The locking element (500) is movable to a locked position and an unlocked position. In the locked position, the locking element (500) can lock the winding wheel (200) so that the winding wheel (200) cannot rotate within the installation space to prevent the winding wheel (200) from releasing or winding the pull rope (400). In the unlocked position, the winding wheel (200) can rotate within the installation space to release or wind up the pull rope (400).

2. The lockable telescopic buckle structure according to claim 1, characterized in that, The side surface of the winding reel (200) is provided with a take-up groove (210) so that the pull rope (400) can be wound in the take-up groove (210).

3. The lockable telescopic buckle structure according to claim 1, characterized in that, The winding wheel (200) extends protruding towards the locking member (500) to form a plurality of circumferentially arranged snap-fit ​​protrusions (220), forming snap-fit ​​grooves (230) between the plurality of snap-fit ​​protrusions (220). The locking member (500) is provided with a relief groove (510), and the plurality of snap-fit ​​protrusions (220) are inserted into the relief groove (510). The groove wall of the relief groove (510) extends radially inward to form a locking protrusion (520), so that the locking protrusion (520) can be engaged in the snap-fit ​​groove (230) in the locked position.

4. The lockable telescopic buckle structure according to any one of claims 1 to 3, characterized in that, The fastener (100) includes: The buckle body (120) has one side recessed to form a groove (121); A cover assembly (130) is mounted on the buckle body (120) to form an installation space between the cover assembly (130) and the buckle body (120) and to rotatably mount the locking member (500) on the buckle body (120).

5. The lockable telescopic buckle structure according to claim 4, characterized in that, A protruding pivot (122) is provided on the other side of the buckle body (120), and a pivot hole (530) is provided on the locking member (500) so that the locking member (500) can be rotatably installed on the buckle body (120) by aligning the pivot hole (530) with and inserting it into the protruding pivot (122).

6. The lockable telescopic buckle structure according to claim 4, characterized in that, The other side of the buckle body (120) is recessed and extends downward to form a recessed groove (125). A second spring (126) is provided in the recessed groove (125). The extension and retraction direction of the second spring (126) is arranged along the plane perpendicular to the buckle body (120). One end of the second spring (126) is connected to the bottom wall of one end of the recessed groove (125). A positioning bead (127) is provided at the other end of the second spring (126). The locking member (500) is provided with a positioning hole (550) corresponding to the positioning bead (127), so that when the locking member (500) is in the unlocked position, the positioning bead (127) is at least partially engaged in the positioning hole (550) to limit the locking member (500).

7. The lockable telescopic buckle structure according to claim 6, characterized in that, The other side of the buckle body (120) is recessed and extends downward to form a long waist groove (123). A first spring (124) is provided in the long waist groove (123). The extension and retraction direction of the first spring (124) is consistent with the rotation direction of the locking member (500). One end of the first spring (124) is connected to the side wall of the long waist groove (123). The locking member (500) is provided with a limiting post (540) on the side facing the buckle body (120). The limiting post (540) is connected to the other end of the first spring (124) so ​​that when the locking member (500) is in the unlocked position, the first spring (124) is compressed to accumulate elastic potential energy.

8. The lockable telescopic buckle structure according to claim 4, characterized in that, The buckle body (120) is disposed through the middle position, and the cover assembly (130) includes: A first cover (131) is provided on one side of the buckle body (120) to form an installation space between the first cover (131) and the buckle body (120); A second cover (132) is provided on the other side of the buckle body (120) to form a rotation space between the second cover (132) and the buckle body (120), and the locking member (500) is rotatably installed in the rotation space.

9. The lockable telescopic buckle structure according to claim 8, characterized in that, One of the first cover (131) and the second cover (132) is provided with a mounting post structure (134) facing the other. The other of the first cover (131) and the second cover (132) is provided with a mounting hole structure (135) corresponding to the mounting post structure (134). The cover assembly (130) also includes screws (136) to connect the first cover (131) and the second cover (132) by passing the screws (136) through the mounting hole structure (135) into the mounting post structure (134).

10. The lockable telescopic buckle structure according to claim 9, characterized in that, The mounting column structure (134) is provided with a fixing groove structure (134a), and the inner ring end (310) of the spring (300) is inserted into the fixing groove structure (134a) so that the inner ring end (310) of the spring (300) is fixed relative to the buckle body (100).

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